A system for preparing acrylic acid and/or acrylic acid ester using a moving bed reactor and its preparation method
A moving bed reactor, acrylate technology, applied in chemical instruments and methods, carboxylate preparation, carboxylate preparation and other directions, can solve the problems of insufficient reaction of raw materials, loss of active components, large reaction energy consumption, etc. To achieve the effect of easy catalyst activation, easy industrialization and simple operation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0079] The preparation method comprises the following steps:
[0080] (a) The mixture of raw material acetic acid and / or acetate and formaldehyde is preheated into a gaseous state and sent into the moving bed reactor 3, and the gaseous mixture is reacted by the catalyst bed in the moving bed reactor 3 to produce acrylic acid and / or acrylate;
[0081] (b) During the reaction process, the deactivated catalyst in the lower part of the catalyst bed in the moving bed reactor 3 gradually moves down and is discharged from the moving bed reactor 3, and the discharged deactivated catalyst returns to the moving bed reactor 3 for recycling after being regenerated.
Embodiment 1
[0084] This embodiment provides a system for preparing acrylic acid and / or acrylate, such as figure 1 As shown, the system includes a raw material storage tank 1, a preheater 2, a moving bed reactor 3, a catalyst regenerator 4, a catalyst feeding device 5, a cooling system 6, a product liquid storage tank 7 and a tail gas collection tank 8; wherein , the raw material storage tank 1, the preheater 2 and the gas inlet at the bottom of the moving bed reactor 3 are connected in sequence, the catalyst outlet at the bottom of the moving bed reactor 3 is connected with the catalyst inlet at the bottom of the catalyst regenerator 4, and the catalyst regenerator 4 The catalyst outlet at the top is connected with the catalyst inlet at the top of the catalyst feeding device 5, and the catalyst outlet at the bottom of the catalyst feeding device 5 is connected with the catalyst inlet at the top of the moving bed reactor 3, and the moving bed reactor 3 The gas outlet at the top is connecte...
Embodiment 2
[0087] This embodiment provides a system for preparing acrylic acid and / or acrylate, such as figure 2 As shown, the system includes a raw material storage tank 1, a preheater 2, a moving bed reactor 3, a catalyst regenerator 4, a catalyst feeding device 5, a cooling system 6, a product liquid storage tank 7 and a tail gas collection tank 8; wherein , the raw material storage tank 1, the preheater 2 and the gas inlet at the bottom of the moving bed reactor 3 are connected in sequence, the catalyst outlet at the bottom of the moving bed reactor 3 is connected with the catalyst inlet at the bottom of the catalyst regenerator (4), and the catalyst is regenerated The catalyst outlet at the top of the device (4) is connected with the catalyst inlet at the top of the catalyst feeding device 5, and the catalyst outlet at the bottom of the catalyst feeding device 5 is connected with the catalyst inlet at the top of the moving bed reactor 3, moving The gas outlet at the top of the bed ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More